A crate falls from a helicopter and lands on a very deep dirt of snow. the snow slows down the crate and eventually brings it to a stop. During the time that the crate is moving down the snow.
1) Compare the magnitude of the force by the snow on the crate to the magnitude of the force by crate on the snow.
Is the correct answer equal due to 3rd law?
a window washer stands on a platform that is connected at the top by a rope that goes up to a pulley then back down to attach to the platform . the platform and window washers together have mass 120 kg and weight of 1200 1) What downward force should the window was he apply to the rope if her wants to accelerate upward 1 m/s^2?
1) To compare the magnitude of the force by the snow on the crate to the magnitude of the force by the crate on the snow, we can use Newton's third law of motion. According to Newton's third law, for every action, there is an equal and opposite reaction.
In this case, the action is the force exerted by the snow on the crate as it slows it down. The reaction is the force exerted by the crate on the snow. So, based on the third law, the magnitude of these forces should be equal.
2) To calculate the downward force the window washer should apply to the rope to accelerate upward by 1 m/s^2, we can use Newton's second law of motion. Newton's second law states that force is equal to mass multiplied by acceleration.
In this case, the mass of the platform and the window washer is given as 120 kg. The acceleration is 1 m/s^2 upwards. So we can use the formula:
Force = mass * acceleration
Force = 120 kg * 1 m/s^2
Force = 120 N
Therefore, the window washer should apply a downward force of 120 N to the rope in order to accelerate upward by 1 m/s^2.